[mikeash]

The only time Apple gave out hard numbers on their review setup, a couple of years ago, they had two reviewers check each submission, with an average of 6.5 minutes per reviewer per submission spent checking it. Obviously, that average contains quite a bit of variation.

[andrewljohnson]

They also check more expensive apps more thoroughly, according to the iOS developer guidelines.

[chubs]

That checks out with my experience. Typically an app will go from 'in review' to 'processing for the app store' in about 15 mins.

[andrewljohnson]

My app always takes many hours to review. There are a lot of buttons.

[suresk]

Interesting. I don't think I've ever had one take < 1 hour, and most are 3+ hours from 'In Review' to 'Processing for App Store' or 'Rejected'. 12-24 hours is fairly common for me, and I just had one approved the other day that was 'In Review' for ~48 hours.